Help Adjusting HTML5 Player Width

I cannot for the life of me figure out how to adjust the html5 player width. Currently the player shows up on the webpage, but the volume meter lies right below the media player. I’m thinking this is something that could be fixed by adjusting the width of the player, but I can’t figure out how to do that. You can view the problem here: https://peoplepassionate.com/pp-001-the-secret-to-remembering-names/

Thanks in advance for any helpful replies.

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